std::scoped_allocator_adaptor::scoped_allocator_adaptor
Defined in header <scoped_allocator> | | |
|---|---|---|
scoped_allocator_adaptor(); | (1) | (since C++11) |
template< class OuterA2 > scoped_allocator_adaptor( OuterA2&& outerAlloc, const InnerAllocs&... innerAllocs) noexcept; | (2) | (since C++11) |
scoped_allocator_adaptor( const scoped_allocator_adaptor& other ) noexcept; | (3) | (since C++11) |
scoped_allocator_adaptor( scoped_allocator_adaptor&& other ) noexcept; | (4) | (since C++11) |
template< class OuterA2 > scoped_allocator_adaptor( const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& other ) noexcept; | (5) | (since C++11) |
template< class OuterA2 > scoped_allocator_adaptor( scoped_allocator_adaptor<OuterA2, InnerAllocs...>&& other ) noexcept; | (6) | (since C++11) |
1%29默认构造函数：值-初始化OuterAlloc基类和内部分配器成员对象(如果由实现使用)。
2%29构造基类。OuterAlloc从std::forward<OuterA2>(outerAlloc)，以及内部分配器innerAllocs...。此重载只参与以下情况下的过载解决方案：std::is_constructible<OuterAlloc, OuterA2>::value是true...
3%29复制构造函数：从other...
other进*this...
other。此重载只参与以下情况下的过载解决方案：std::is_constructible<OuterAlloc, const OuterA2&>::value是true...
other，使用移动语义。此重载只参与在下列情况下的重载解决方案：std::is_constructible<OuterAlloc, OuterA2>::value是true...
参数
outerAlloc | - | constructor argument for the outer allocator |
|---|---|---|
innerAllocs... | - | constructor arguments for the inner allocators |
other | - | another std::scoped_allocator_adaptor |
例外
2-6%29
noexcept规格：
noexcept
缺陷报告
以下行为更改缺陷报告追溯应用于先前发布的C++标准。
DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
LWG 2782 | C++11 | constructors taking OuterA2 weren't constrained, interfering with metaprogramming | constraint added |
另见
allocate | allocates uninitialized storage using the outer allocator (public member function) |
|---|---|
construct | constructs an object in allocated storage, passing the inner allocator to its constructor if appropriate (public member function) |
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